Author's notes: Welcome back and don't forget to review. Thanks in advance to Miss Singing in the Rain. This will follow straight after The Dark Knight and the Doctor, so if you haven't read it yet, read and review it before starting with this one.

Now first, Batman's arsenal has been upgraded to same level as in Arkham games, because he needs them to survive in the current environment. Also this is also a slight crossover with Kingdom Hearts, but only because of the settings. This will also be AU for KH because of Batman and the Doctor's influence in the story. Later there will also be one of Batman's and some of the Doctor's enemies to affect the events

Whatever happened to the Caped Crusader

The BAT flew over the Atlantic Ocean carrying the bomb away from Gotham. Batman knew this was a suicide mission, but according to the Doctor, the history considered Bruce Wayne a dead man. Even if he wanted to save himself, it would have been impossible. The BAT didn't have an autopilot for Batman to jump out at safe distance. That distance's safe line was crossed already anyway.

Checking the bomb's timer, ten seconds, the last spark of survival and the fear of death he had rediscovered in the Pit, Batman released the cable carrying the bomb and dropped it. He might still have a chance to survive so he activated the BAT's afterburners and flew as fast as the aircraft could, to as far as he could. Then he heard the explosion.

Batman leaned forward and bit his teeth. He let out a growl as he saw the flashing light approaching behind. The blast from the bomb was coming, faster and faster and he knew he was going to die. Still letting the BAT speed ahead, Batman lifted his posture and closed his eyes, ready to see his parents again. The blast would take him soon. Any second now…

But it didn't or it was so much painless he didn't feel it happen. Batman opened his eyes to see the night sky through the BAT's glass. Was this afterlife? He was still wearing his armor and sitting inside the BAT, so did they come there too? Batman looked down to ground. All he could see to every direction was an endless city. There were some light in the building's windows, giving Batman a reason to land.

The BAT landed on a rooftop of a similar building where Batman had left it before his first battle with Bane. Then he jumped off to street level. Walking out of the alleyway Batman found nobody out there. Troubled by this, he activated the cowl's environmental sonar mode to be sure. He saw no body. No civilians, no criminals, no police officers. Batman was the only one in the endless ghost city.

''Where am I?'' Batman asked himself shaking his head. There were no dead family members, friends or enemies, so it couldn't have been heaven or hell. Not that he had believed in those options anyway. Batman and Bruce Wayne had been an atheist since he had returned to Gotham nine and a half years ago. Also after meeting the Doctor he had concluded that religious faith in something had no weight in the world someone like he existed. This place was something completely else.

Batman returned to the BAT and leaned to it thinking what he should do now. If there truly wasn't any one else here, what should he do now? Lifting his head up, he saw something impossible. Batman switched to his cowl's vision mode to clarify if what he saw was really there. A whole building was floating in the air, looking like a white castle mixed with Wayne Manor and Arkham Asylum. Yes, it was real. Not knowing what else to do, Batman jumped into the BAT and flew to the floating castle.

Landing the BAT to a docking bay of some sort, Batman thought that this castle couldn't have been just what it looked like. If he had come here maybe six months earlier without ever meeting the Doctor, Batman would have refused to believe that it could have possibly been a spaceship. But what kind of a spaceship was it? Jumping out, Batman took a glance of his surroundings, bare eyed and with the cowl's vision mode. No humans or aliens, if they were an option, in sight. His arrival here was still a secret to whoever was in charge here. The BAT's presence however concerned him. The aircraft was standing in the white walled and floored bay with its black contrast sticking out for everyone to see. If someone would find it, they might learn about his presence as well and without knowing who 'they' were, Batman had to be careful and stay in the shadows. For that, the BAT had to be hidden and made sure no one came realize it was here. Then Batman remembered what the Doctor had given him when he returned to Gotham, the Perception Filter keychain. Batman hung it up to one of the BAT's cannons and hoped that he only could see it as he put it on. With that thought, he shot the grapple hook to the ceiling and started to explore the castle.

''Doctor, what just happened?''

The Doctor, Clara Oswald and Selina Kyle all stood stunned out of shock in the TARDIS console room, looking at one of the screens in the console. After seeing that Batman had tried to save his life after carrying the bomb they had to watch as him and the BAT just disappear out of thin air. The Doctor had no idea what had happened. He had seen almost everything that the universe had to throw at him, but this was new. It worried Clara and Selina.

''Doctor, what happened!?'' Clara asked.

''I don't know.''

''How did he just disappear?'' Selina asked.

''I don't know.''

''What are we gonna do?'' Selina asked.

''I DON'T KNOW!'' The Doctor shouted back. ''I, I, I… I just don't know.''

He walked backwards and sat down to the stairs that took to upper levels, running his hands through his hair out of frustration.

''Where, when, how and why, or maybe who also. If we find those out, we might get close understanding what.''

Selina and Clara exchanged glances as the Doctor pulled out a leather bound wallet from his jacket pocket.

''This all started with a message in the psychic paper. That helped us find him and getting him back to save Gotham. And we don't even know who sent it.''

All three looked at the wallet in the Doctor's hands and the blank paper in it.

''Whoever you are, if you know something… give us a clue.''

Batman wandered through the white lit corridors of the castle. So far he hadn't run into anyone, but the surroundings were intriguing. When he had first seen the castle floating in the sky, it had looked smaller but now when he was inside it looked bigger. Maybe whoever had built it had access to the same technology as the Doctor did with the TARDIS. Eventually Batman heard someone talking when he came to a door which had a plate saying DUNGEON.

''Better than nothing,'' Batman growled under his breath and put the cowl's sonar mode on. Lucius had fortunately converted and upgraded it to work without cellphones since its last use. It worked now like an x-ray vision by picking up the sounds of others and creating echo constructs that he could see on the other side of the walls. Thinking it like that, he was now a more literal Bat-Man.

The echo formation Batman saw through the door showed three constructs: one tall man facing someone who was leaning to big prison bars and something that looked like a dog.

''What are you going to do with us?'' a girl's voice said on the other side of the door. When it was spoken, the construct leaning to bars sent small waves from the head, identifying it as the speaker.

''You are the fire that feeds Sora's anger,'' was the heard answer and the sound waves came from the tall man. That was all Batman needed to hear to understand the situation. A girl and her dog were hostages, taken by that man and possibly others. The kidnapper began to walk away as he had said what he had to say, shown by the sound waves appearing and closing in towards the door.

Batman grabbled himself up to ceiling as the door opened. He watched as the kidnapper came out, wearing a black robe, indicating that this was some kind of a cult. His head was exposed, showing a long blue hair and sharp shaped face with a scar under his right eye.

''Who are these people?''

Batman shook his head and entered the dungeon through a window hole above the door. The dungeon was not what he had expected. The walls were all white, making the room look bigger than it was and it only had one cage like cell. Inside there was a red haired girl wearing a pink dress that looked like a sleeveless hoodie and a mini shirt. She also had over the knees long socks and rings in her wrists. She must have been an important person, as in a rich socialite's daughter or something. The dog however didn't look like any dog Batman knew. It was yellow and looked weird. Possibly alien. If it was the girl's pet, she might not have been a human either but a humanoid alien like the Doctor. Still if she was a hostage here, Batman felt obligated to save her. Hopefully she could also shed some light to there he was.

In the TARDIS, the psychic paper received a message for the Doctor:

THE SILENCE WILL FALL WHEN THE FORCE MEETS THE OBJECT

''No,'' the Doctor said as he read it. ''NO! NO! NO! NO!''

Author's notes: REVIEW! And those who have played Kingdom Hearts, yes. Batman is in the World That Never Was. However the Doctor knows it by a different name. And for Miss Singing in the Rain, and others, sorry about the cliffhanger. I'm just trying yo keep this story interesting.